Traveling chain grate



May 27, 1,924-,

- A. SCHNEIDER TRAVELING CHAIN @RATEA 1920 4 fsheets-sheef s Filed Aug.14

May v-2'7 l 924.

A. SCHNEIDER TRAVELING CHAIN GRATE Filed Aug. 14 1920 4 sheets-sheet 4Patented May Z7, i924..

TBAVELING CHAIN creara.l

jlpplication filed August 14, w20.' Serial No. 4033594;

(GRANTED UNDER THE ruovIsIoNs or THE Acronis/manita, 1921',Y 41 STAT.L., 13139' To all whom t may concern.

Be it known that I, ADoLr SCHNEIDER, a citizen of Germany, residing atMannheim-Waldhof, Germany, have invented certain new and usefulImprovements in Trav? cling Chain Grates (for which I have filed anapplication in Germany, June 11, 1918, Patent No. 351,526, April 8,1922); and I do hereby declare the following to be a full, clear,and'eXact description of the invention, such as will enable othersskilled in thev art to Which it appertains to make and use the same.

This invention relates to improvements in traveling-chain grates, andone of the objects is to provide'means at the end of the grate to closethe fire-place from the ash-pit to prevent-air entering at this point.l/Vith this object in view, the invention con sists in providing amovable damming member at the end of the grate which by itsV movementsuccessively exposes cold parts to the heat of the fire-place and thecoal on the grate, While the heated parts are removed to a place havinga lower tempera ture, thereby reducing the Wear of the damming member.

In one embodiment of the invention, the means for moving the dammingmember is constructed in a Way to control the direction of ltravel ofthe damming member inde-A pendently Vof the direction of travel ofthetraveling grate, so that the damming member may be movedeither in onedirectiony or another to shift unburnt coal back on the grate orV toremove the slag from the grate.

Another object ofthe improvement is to so construct theldamming meansthat it can be set at different distances fromthe surface ofthe grate;also so that it can be Ymoved therefrom When necessary to remove Toaccomplish this,l`

large pieces of slag. the damming member is constructed so that it canbe moved upWardly,or` rockedaway from the grate, or moved in both Wayssimultaneously. 4

These and otherl objectsare attained by the means illustrated in theaccompanying drawings, in Which- A Y Fig. 1 is a vertical longitudinalsectional n View of apart of a grate and adjacent parts ofl thelire-,place illustrating one .form

ofthe Fig. shown in- Fig. 1;

Fig. 3' is an enlarged side elevation oftheY rear portion of the.damming means shown in Figs. land 2 theqparts being shownin section ontheline 534-3 of Fig.V 4;

vFig. 4 isy a plan; view of the structure improved damming. member;

shown in Fig. 3, part being shown` insee-,1

tion; f y

Fig. 5 is .a longitudinal sectional view of amodied form taken` on thedotted line 5 5y of Fig. 6; y

Fig. 6 isl anl endvieW partly in sectiony of the form shown in Fig. 5;

ing a further modified form;

Fig 8is a vertical longitudinal sectional view of another modified form;

Figf? is a similar View to Fig. 6, show,

Fig. 9V isa vieul slightly modified fromV the form shown in Fig. 8; and

Figi' 10 is a vertical section of the Fig. 9 form taken longitudinallyof thecylindrical damming member. I I

Referring to Figs. 1 to .4, inclusive, there is mounted above the endofthe traveling grate 15 a .damming member comprising drums 16 secured onebeside the'other on `a damfsupporting shaft 17. yThis shaft 17 isrotatably4v mounted in rockers 18 and 19 which are/supported on atransverse tubular i `supporting shaft 2O pivoted` in bearings 21v andA22. To `op'positeends of 'the'shaft 17 aresecured sprocket-Wheels 23and 24, and vvheel`24I is' connected by Va .ehainv25 to asprocketfvvheel 26 on the shaft 20. sprocket-,Wheel 26 isfprovided Withaclutch 27 adapted to be coupled with a coaxial .sprocket-Wheel 28.

A' reversing mechanism for the damming member. is.. provided, whichconsists of sprocket-Wheels' 29 Vand Vgear-Wheels 30 in mesh.I with eachother, mounted-on stubshafts 31 carried by the roclerf18, chains 32connecting said sprocket-Wheels 29 re spe'ctively with the sprockewheel23 Von shaft 17, andy a sprocket-Wheel y33 mounted on the shaft 20.VBoth of said sprocket- Wheels 26.and 33 are provided With clutchmembers27 adapted to becoupled With'the TA1-ENT OFFICE. i

AnoLr SCHNEIDER, or MANNHEIM-Warneton, enaivtaur, AssIGNonf To zum;F Y

2 is a plan View of the structureA` 'loA coaxial sprocket-Wheels 281,and 35, Which"- are loosely mounted and longitudinally shiftable Withrespect to the shaft 20, and

v said sproclet-Wheels 35 and 28 are connect- Sprocket-Wheels 35 and 28are adapted to be shifted in axial direction and alternately into andout of coupling engagement With Vthe adjacent sprocket-Wheels 26 and 33by means of the caps 39, which are connected to said sprocket-wheels androtatably oonnected to a shift-rod 40 by collars 41 (see Fig. 4). Saidrod 40 .is preferably extended through said tubular shaft 2O and isprovided with handles 42 at its ends .formanually opera-ting the rod andsprocketwheels 28 and 35 from either side of the apparatus.Thefsprocket-Wheels 37 are alsopreferably mounted to slide axially ontheir shaft 34, so that the proper'alinement of the chains 36 and.sprockets 28 and 35 can be maintained when said sprockets are shifted.

A n important feature of the invention resides in providing means forregulating the pressure of the damming member on the slag andgrate l5,such means being preferably arranged to be adjustable froml Without.This pressure-regulating means preferably consists of adjustable Weightscarried by Lne rear ends ofthe rockers 18 and A19. As shown clearly indetail in Figs. 3 and 4, said adjustable means consist of sprocketwheels43 each of Which'is fixed to a tube-bearing 43 which is mounted on asuitable supportin alinement With the axis of the shaft 20 and isadapted to be rotated by means of the hand-Wheels 44, chains 45'connecting said sprocket-Wheels 43 with another pair of sprocket-Wheels46 secured to the ends of a sprocket-Wheel driveshaft 47, sprocket`Wheels 48 also keyed to shaft 47, and chains 49 extending from saidsprocket-Wheels 48 to and'in engagement With sprocket-WheelsA 50 keyedto a sprocket-Wheel driven shaft 51`also mounted in the rocker-armsadjacent their rear ends, said chains being also in engagement withother sprocket-Wheels 52 keyed'to a Weight-shaft 53 which supportssuitable Weights 54. This-shaft 53 is provided With gear-v1heels 55 nearits ends, and said gear-Wheels 55 are supported upon and meshed Withtoothed racks 56 preferably formed on the top edges of the rear-ends ofthe rocker-arms 18 and 19. It Will thus be "seen that by turning eitherof the handings 43 and sprocket-Wheel 43 and hand- Wheel 44. j Y Y Forlimiting the movement of the damming members toward the grate 15, thereare provided cams 57 fixed to a shaft`58 having handles 59, said shaftbeing mounted in a suitable fixed support With its handles disposed onthe outside thereof.

From the foregoing description, it will be understood that the pressureof the dam ming members on the grate andslag is regulated by shiftingthe Weights 54 by the hand-Wheels 44; also that thedirection of movementof the dammingmembers is controlled by manipulating the handles .42;thatis, by coupling the sprocket-Wheels 26 and 28 with each other (asshown rin Fig.

2), the rotation is directly transmitted from the shaft of the grate tothe damming member, and by coupling the sprocket-Wheels 33 and 35, therotation is transmitted through the intern'iediate reverse gearing30-30.

The .modied form shown 1n Figs. 5 and 6 consists of a damming memberformed of a series of individual cylindrical or prisinatic drums 60rotatably mounted ontrunnions 61 provided on the lower ends of theframes or boxes 62 Which are mounted to rock upon a shaft 63 which inturn is mounted to rotate in the front ends of the rockers 18 and 19. Torotate this shaft` 63, a sprocket-Wheel 64 is secured to the end of theshat, and this in turn is operated by a chain 65 (similar to chain 32,Fig. 2) eX- tending from the front sprocket-Wheel 29 heretoforedescribed in the Figs. 1 to 4 confV ing between the same When one ormore of.

the drums are rocked more or less out of alinement with each other andaway from the grate. The shaft 63 and its driving means are similar inall respects to shaftl'? heretofore described. It will bc understoodthat the damming member (shown in Figs..

5 and 6) has a double rocking movement; that is, one rocking movement onthe shaft 63 and another on the shaftV 20 (shown in Figs. 1 to 4) whichsupports the rockerarms, not shown in Figs. 5 and 6. j

ln Fig. 7 is shown a modification Which Will be particularly useful inmany cases. In this form, the dammingv member consists of a series offlexible screens 70, preferably formed of chains shown diagrammatically"in the drawings, mounted to travel on drums 71 and 72. The drums 71 arekeyed vto the shaft 73 mounted in the front ends of the ing drums,

roclre'rfmembers 18 vand '19 and driven 'in the same manner as areshafts 63 and 17, here-- tofore described. An important feature of theFig. 7 construction resides in the fact that only a small ypart of thedaminin'g screen is exposed to the heat of the fire at one time and onlyfor a comparatively short peiiod of its travel; anchas the heated partturns from the fire,it is cooledthi'ough the" which will covertlieopeiiings between the v screens andbetween the drums 71 and 72.

In addition, thesefraines serve vto steady the dainmiiig screens.

In Figa-8 to 10, inclusive, Vis shown aV modified forniin which thedamming menioerV consists of` a series of cylindrical drums 75 supportedon rollers 76 secured to a shaft 77, said shaft 77 and its drivingmeansbefv ing` mounted on the rocker-arms and being in all respects similarto the corresponding parts shownA iii the forms heretofore described. Tosaid shaft'77 are secured gearwheels 78 which are indriving engagementwith internal gears 7 9 fixed to the drums 75.

Y The cylindrical walls of these drums 75 are preferably foraininated,while, preferably within the drumsthere is placed a plurality of steelballs to disintegrate any slag which might get into the drums. The endsof the drums 75 are preferably closed by `foraminated disks 81supported-on the shaft 771 and loosely guided. in suitable groovesformed around the inside of the drums.

In Fig. 8 is shown a modified form of the means for preventing theadmission of air, consisting of a pivoted plate 82 (similar to plate 74,Fig. 5) carrying at its free end a pressuresroller 83 bearing onthedrums 75. In Figs. 9 and 10, this pressure-roller 83'is shown supportedupon the shaft 77. The pivoted plate 82 can also be provided withend-wings 84 to prevent excess of air enterring the fire-box at the endsof the dammingmember, as shown in Fig. 8.

In some cases, it is preferred to provi-de a spray-pipe 85 (Figs. 1 and2), through which a cooling medium may be supplied to thedamning-member.

What I claim is:

1. In combination with a traveling-chain grate, an endlesstraveling-surface dam piv-V oted on a rocking support above the rear endof the grate surface, and means for driving It will be understood, liow`are said aamfmmiheaeafrshaa or the gra-aF 2. In combinationwith' altraveling-chain f grate, an endlesstravelingesurface dam snp'-` portedabove the rear endof the grate sui-` face,-and means for drivingsaid-dam from* the rear shaft of thegrate, said driving means embodyingdevices ywhereby the direc# tion of movement ofthe damniay bereversed.

3. In'combination with a traveliiig-chainV grate, an endlesstraveling-surface dam mounted above the -rea-r end thereof,f and meanswhereby the darn may ly driven in either direction. j

t.N In combination with a traveling-chain be continuousgrate, arocking-frame,mounted to theY rear of said "g1-ate and carryingat itsforward f end an endless traveling-'surface darn and-at its rear-endbeyondits pivotan.' adjustableweight, andv means for driving said dam'from the vgrate-driving-mechanismi 5.' The combination with atraveling-chain grate, of arrocking-'fijame mounted "to the v rear ofthejgrate, anendless traveling-surface damkn'iounted on the forwardendfof said rockingsframe and adapted-to` `swing toward 'fandfrom thegrate, an 'adjustable' weight at the rea-r end of said rocking-fra1ne saY' to counter-balance the dam, means whereby"` said rocking-frame may beraisedorlowered at its forward end and supported in `its ad-vjiistedfpositi'on, and means .for driving lsaid dani Yfrom thegrate-driving mechanism.

G. rPhev combinationwith a travelingy I grate having adrive-shaftcarrying sprocket-wlieels, of 'ajsupportingshaft mounted tothe rear of said grate, a Vrocking-frame Vmounted "on the saidsupportingshaft carrying at its rear end an adjustable weight' and atits forward end a dam-supporting shaft carryingsprocketewheelsA andVanend less traveling-surface damsupported immeI-f diat'ely'above therear end of the grate;m

means for driving said dam from 'the Vrear drive-shaft of the travelinggrate embodying and sprocket-chains'connecting said: sprocketwheels withthe sprocket-wheels on the driv`- Y i I ing-shaft of the grate and alsoon the damsupporting shaft, a reversing mechanism: on said rockingframe,and manually-operable means for putting the direct drive into ac-V Vsprocket wheels on said sup-porting shaft i above the rear end of saidgrate, means for adjusting the dani to various heights, means forvarying the pressure of the dam toward the grate, and means for drivingthe dam from the grate-driving mechanism in all positions of the dam.

8. In combination with a traveling-chain grate, an endless traveling damsupported above the rear-end of the grate surface and ible dammingconsisting of a iiexible damming member `and a driving support.therefor.- Y

9. In combination with a traveling-chain grate, an endless traveling damsupported above the reariend of the grate surface and consisting of apair of rotary drums and aY flexible daniining member mounted on saiddrums. e,

l0. In combination with a traveling-chain grate, van endless travelingdani supported above the ieaiend of the grate surface and consisting ofa pair of rotary drums and chains mounted on said drums to provide adammingscreen. Y

l1. In combination with :i traveling-chain grate an endless travelingdam supported above the'rear-end of the grate surface, and pivoted meansfor supporting saidendless traveling dam to permit it to be moved awayfrom thegrate surface, said dam embodying a pair of rotary drums and aflexniember mounted on said drums to provide a damming screen.

12. In combination with a traveling-chain grate,'a`n endless travelingdam pivoted on; a rocking frame above the rear end of the gratesurface,V and means for Ydriving said dam from the rear' shaft of thegrate including a driving mechanism carried by saidA rocking frame.

13. In combination vvitli a traveling-chain grate, an endless travelingdam pivoted on a rocking frame above the rear end of the grate surface,and means for driving said dam alternatively in opposite directionsincluding a direct driving and a reversing mechanism carried by saidrocking frame.

14:. In combination With a traveling-chain grate, an endless ltravelingdampivoted on a rocking frame above the rear end of the grate surface,means for driving said dam alternatively in opposite directionsincluding a direct driving and a reversing mechamism carried bsaidrockin frame and a manual control means for shifting said directdriving mechanism into and yout Vof connection with said reversingmechanism.

l5. In combination with a traveling-chain grate, an endless travelingdam pivoted on a rocking frame above 'the rear end of the grate surface,means for driving said dam` frate, said stop means comprising pivotedcams engaging the underside of'a portion of the rocking frame.

17. In combination with a traveling-chain gratea rocking frame mountedto the rear of said grate and carrying at its forward end an endlesstraveling dam and at its rear end beyond its pivot an adiustablecounterbalancing means, means for driving said dam from thegrate-driving mechanism,

and means partly located on the pivotal axis of the rocking frame forcontrolling the adjustments of the counter-balancing means.

In testimony whereof signature in the presence of tvvo Witnesses.

Dn. ADOLF SCHNEIDER. Witnesses:

Josiir SGHRECKNNBERGER, STEFANIE SCHERER.

I hereunto affix my

